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Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 844 · 40 questions
TalentJR

What you do (Yellow or red?): 1. Mix turmeric powder with a little water into a paste and paint it on white paper strips; let them dry. 2. Put a drop of soap solution on one strip and a drop of lemon juice on another. 3. Write down the colour each drop makes. 4. Add lemon juice to the reddish spot and watch it change back.

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  1. 1.🧺 Which of these is needed for the turmeric test? (a) yeast (b) lemon juice (c) a battery cell (d) a balloon
  2. 2.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) salt water (d) detergent water
  3. 3.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
  4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
  5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
  6. 6.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
  7. 7.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) detergent water (d) baking soda water
  8. 8.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
  9. 9.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) turmeric powder (d) yeast
  10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
  11. 11.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) tamarind water (d) detergent water
  12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
  13. 13.True or false: water is needed for the turmeric test. (a) False (b) True
  14. 14.True or false: a comb is needed for the turmeric test. (a) True (b) False
  15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
  16. 16.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
  17. 17.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sniff each bottle hard (d) sip each liquid
  18. 18.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
  19. 19.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap is an acid (d) soap water is a base
  20. 20.🔍 Which is the odd one out? (a) salt water (b) plain water (c) lemon juice (d) soap solution
  21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) a balloon (d) lemon juice
  22. 22.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) salt water (d) baking soda water
  23. 23.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) baking soda water (d) tamarind water
  24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the turmeric paper
  25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the colour we see (c) the turmeric paper (d) the liquid we test
  26. 26.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
  27. 27.True or false: a comb is not needed for the turmeric test. (a) True (b) False
  28. 28.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
  29. 29.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
  30. 30.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
  31. 31.True or false: detergent water keeps turmeric yellow. (a) True (b) False
  32. 32.🫧 Which of these is a base? (a) lemon juice (b) tamarind water (c) salt water (d) baking soda water
  33. 33.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
  34. 34.🫧 Which of these is an acid? (a) sugar water (b) baking soda water (c) curd (d) detergent water
  35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
  36. 36.🧺 Which of these is not needed for the turmeric test? (a) water (b) lemon juice (c) a magnet (d) white paper strips
  37. 37.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
  38. 38.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
  39. 39.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
  40. 40.True or false: vinegar is an acid. (a) True (b) False

Answer key

  1. lemon juice
  2. salt water
  3. a base
  4. we keep it the same
  5. we change it
  6. needed
  7. plain water
  8. reddish-brown
  9. turmeric powder
  10. True
  11. tamarind water
  12. the turmeric paper
  13. True
  14. False
  15. we keep it the same
  16. an acid
  17. use only kitchen items
  18. not needed
  19. soap water is a base
  20. soap solution
  21. a balloon
  22. salt water
  23. baking soda water
  24. the colour we see
  25. the liquid we test
  26. False
  27. True
  28. not needed
  29. needed
  30. False
  31. False
  32. baking soda water
  33. needed
  34. curd
  35. the light we look in
  36. a magnet
  37. not needed
  38. turns reddish-brown
  39. True
  40. True

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